nsurlsession

问题 So I'm having hard time understanding something. This are the things I understand about NSURSession : Generally , I have 2 options for (as far as I know) DataTask(e.x dataTaskWithRequest) And DownloadTask(e.x DownloadTaskWithRequest ) - Using their delegate method , or use the completion handler , Can't do both. I have managed to receive DATA using dataTaskWithRequest like this : let request = NSMutableURLRequest(URL: dataSourceURL!) request.HTTPMethod = "POST" let postString = "lastid=\(id)"

问题 I have the following code in my iOS project and I want to convert to use NSURLSession instead of NSURLConnection . I am querying a REST API which uses a token-based HTTP Authentication scheme but I cannot find an example of how to do it. NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]]; NSString *username = [[NSUserDefaults standardUserDefaults] stringForKey:@"Username"]; NSString *token = //GET THE TOKEN FROM THE KEYCHAIN NSString *authValue =

问题 I have this kind of code below func upload(){ let img = UIImage(named: "1") let imgData = UIImageJPEGRepresentation(img!, 1) let data = imgData?.base64EncodedString() var request = URLRequest(url: URL(string: url)!) request.httpMethod = "POST" request.setValue("\(auth)", forHTTPHeaderField: "Authorization") request.setValue("application/xml", forHTTPHeaderField: "Content-Type") var postString = "<uploadrequest>" postString += "<folderid>123</folderid>" postString += "<folder_name>images<

问题 I wanted to create a category on NSURLSession. The app compiles ok, but when I attempt to call the category methods I get -[__NSCFURLSession doSomething]: unrecognized selector sent to instance 0xbf6b0f0 <unknown>:0: error: -[NSURLSession_UPnPTests testCategory] : -[__NSCFURLSession doSomething]: unrecognized selector sent to instance 0xbf6b0f0 Very strange, here is a test class I built to show the issue. The category on the NSString works fine, but the category on NSURLSession fails to find

问题 I have problem with this block. I trying to get the data inside the block of NSURLSession . here's my code -(NSDictionary *) RetrieveData{ NSURLSession * session = [NSURLSession sharedSession]; NSURL * url = [NSURL URLWithString: self.getURL]; dataList =[[NSDictionary alloc] init]; NSURLSessionDataTask * dataTask = [session dataTaskWithURL:url completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { self.json = [NSJSONSerialization JSONObjectWithData:data options:0 error

问题 Hi I receive the following error: Error Domain=NSURLErrorDomain Code=-1202 \"The certificate for this server is invalid. You might be connecting to a server that is pretending to be “server-prod.name-cloud.com” which could put your confidential information at risk.\" UserInfo={NSErrorFailingURLStringKey= https://server-prod.name-cloud.com /v3/project/session/926B9E6BE31B/, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3,

问题 I have an app which is currently uploading images to amazon S3. I have been trying to switch it from using NSURLConnection to NSURLSession so that the uploads can continue while the app is in the background! I seem to be hitting a bit of an issue. The NSURLRequest is created and passed to the NSURLSession but amazon sends back a 403 - forbidden response, if I pass the same request to a NSURLConnection it uploads the file perfectly. Here is the code that creates the response: NSString

问题 When connecting via HTTPS to a server, I implement the NSURLSessionDelegate method URLSession:didReceiveChallenge:completionHandler: to implement some custom functionality. The problem is that this delegate method is only being called the first time a request is made (subsequent requests do not invoke this method). My custom functionality requires the delegate method to be called for every request. Here's an example: - (IBAction)reload:(id)sender { NSURLSession *session = [NSURLSession

问题 The question is around NSURLSession and NSURLSessionUploadTask . I'm uploading large files to server and noticed that when I force quit the app the whole background upload just stops. However, when upload starts while app is running through the Xcode/debugger, then my upload completes just fine even when I stop the app running via Xcode 'stop' button. I suspect that force quitting the app using Xcode simulates an iOS system command and not a user action. So my question is whether it's true

问题 I want to upload multiple images in background using a single uploadTaskWithRequest method. While trying the following code returns Upload tasks from NSData are not supported in background sessions...please how to achieve this func createRequest (param : NSDictionary ,imagearray :NSMutableArray, strURL : String) -> NSURLRequest { let boundary = generateBoundaryString() let url = NSURL(string: strURL) let request = NSMutableURLRequest(URL: url!) request.setValue("multipart/form-data; boundary=